Hand-hole spout-tube.



L. BURMEISTER.

HAND HOLE SPOUT TUBE.

APPLICATION FILED JUNE 8. 1914.

Patented May 1, 1917-.

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UNITED STATES PATENT OFFICE.

LOUIS BURMEISTER, OF MILWAUKEE, WISCONSIN.

HAND-HOLE SPOUT-TUBE.

Application filed June 8, 1914.

To all whom it may concern:

Be it known that 1, Louis BURMEISTER, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Visconsin, have invented new and useful Improvements in Hand-Hole Spout- Tubes, of which the following is a descrip tion, reference being had to the accompanying drawings, which are a part of this spe i fication.

This invention relates to improvements in hand-hole spout tubes.

In flour mills and grain elevators in which material is conveyed through tubes from one point to another it is necessary to provide numerous hand-holes in the tubes to permit the cleaning out of said tubes in case portions thereof choke up. It is also necessary to provide these hand-holes with covers which will form tight closures and be easily removable when desired.

It is one of the objects of the present invention to provide a hand-hole spout tube which is adapted to form part of the conveyer tube and in which the cover forms a dust-tight closure and may be easily removed to clean out the tube in case of an interrupted flow of material through the tube.

A further object of the invention is to provide a handhole spout tube which is of very simple construction, is strong and durable and which may be manufactured at a minimum cost.

With the above and other objects in view, the invention consists of the improved handhole spout tube and its parts and combinations as set forth in the claims and all equivalents thereof.

In the accompanying drawing in which the same reference characters indicate the same parts in all of the views:

Figure 1 is a side view of the, improved hand-hole spout tube, a portion being broken 1;; away to show interior construction.

end portions 6, so that the hand-hole spout tube may be connected to a spouting tube in Specification of Letters Patent.

Patented May 1, 1917.

Serial No. 843,753.

the ordinary manner and form a continuation thereof. Intermediate of the end portions 6 of the tube the upper opposite half side portions extend upwardly and form parallel side walls 7, the upper edges 8 of which terminate a short distance above the plane of the upper surfaces of the tubular end portions 6. The vertically-extending edge portions 9 are overlapped by the side flanges 10 of end members 11 which are also provided with curved lower flanges 12 conforming in contour to the tubular end portions 6; These end members close the end spaces between the parallel walls and are soldered to the respective parts to form tight joints and in connection with the side walls form a rectangular opening 13 which is closed by a cover 14.

The cover 14 is formed of a plate of sheet metal having its side and end edge portions 15 folded over the horizontally-extending flange portions 16 of the angled strip 17 and form projecting cover edges 14. These parts form the holding rim of the cover. The depending portion 18 or rim proper is of rectangular form and is of a size to snugly extend into and fit the rectangular opening 11 of the spout tube. The lower edge portion 19 of the rim is folded over outwardly and upwardly to engage a strip of sealing fabric 20, the upper edge portion of which is interposed between the horizontal portions 16 and the folded portions 15 of the plate.

This fabric projects outwardly from the rim proper and forms a dust-proof seal between the cover rim and the rectangular wall of the opening. I

From the foregoing description it will be seen that the hand-hole spout tube is of simple construction, is strong and durable and is well adapted for the purpose described.

It will also be seen that the hand-hole spout tube may be easily connected to and form part of a spout tube line and that the cover may be easily removed to clean out the tube in case the spout line becomes choked up.

What I claim as my invention is:

1. As a. new article of manufacture a grain conveyer hand hole spout tube formed of sheet metal, comprising a tubular member having integral opposite side walls projecting medially therefrom, and walls connected to the side walls and to the tubular portions of said member to form a rectangular opening, a cover for said opening having a cover portion which projects over and beyond the outer edges of the opening walls and having a rim portion which enters the opening and closely engages the walls bounding the opening, and a sealing means interposed between the cover rim and the opening walls.

2. As a new article of manufacture a grain conveyer hand hole spout tube formed of sheet metal, comprising a tubular member having opposite parallel side walls projecting medially and outwardly therefrom, flanged end walls having curved flanged portions which overlap tubular portions of the tubular member, said overlapped portions being soldered together and forming a rectangular opening, a cover plate for said opening having folded edge portions which project over and beyond the edges of the walls, an angular strip portion extending between said folded portion and depending downwardly therefrom to form a rectangular rim which enters the opening of the tubular portion, said rim having a folded lower edge, and a strip of sealing material extending around the rim and between the folded portions of the rim and the folded portions of the cover plate and engaging the walls of the tubular member to form a dust tight seal between the said walls and the cover.

3. As a new article of manufacture a grain conveyor spout tube hand hole cover, comprising a plate of material having folded edge portions, an angular strip portion extending between said folded portion and projecting outwardly at an angle therefrom to form a rectangular rim, the lower edge portion of said rim being folded, and a strip of dust sealingmaterial extending around th rim and between the folded portions of the cover plate and the rim.

In testimony whereof, I ailix my signa ture, in presence of two witnesses.

LOUIS BURMEISTER.

\Vitnesses KATHERINE I-IoL'r, C. H. KEENEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

